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Small Scale Motions Over Concentrated Magnetic Field Regions of the Quiet Sun

Published online by Cambridge University Press:  08 February 2017

H.C. Dara ,
C.E. Alissandrakis  and
S. Koutchmy
H.C. Dara
Affiliation:
1Research Center for Astronomy and Applied Mathematics, Academy of Athens, GR-10673, Athens, GREECE.
C.E. Alissandrakis
Affiliation:
2Section of Astrophysics, Astronomy and Mechanics, Department of Physics, University of Athens, GR-15783, Athens, GREECE.
S. Koutchmy
Affiliation:
3 Institut d' Astrophysique de Paris, Paris F-75014, FRANCE.

Abstract

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Using a time sequence of filtergrams in the magnetically sensitive λ6103A CaI line (with circular polarization measurements), obtained with the SPO Vacuum Tower Telescope and the universal filter we mapped the line of sight velocity and the longitudinal magnetic field in three quiet solar regions. After elimination of the effect of the 5-minute photospheric oscillations we found in two regions of concentrated magnetic field no association with the line of sight velocity, while the third region was associated with small (<300 m/s) downflows.

Type
III. Small-Scale Magnetic Fields
Information
Symposium - International Astronomical Union , Volume 138: Solar Photosphere: Structure, Convection and Magnetic Fields , 1990 , pp. 153 - 156
Copyright
Copyright © Kluwer 1990 

References

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